Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Plastics & Elastomers Functions
- Technologies
Features & Benefits
- Labeling Claims
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- General Processing Recommendations
Green Dot’s Terratek® BD7120 must be dried due to the hydroscopic nature of the polymers used in this material and their tendency to hydrolyze in the presents of water, pre-drying the resin is required. Green Dot recommends that the moisture level of the resin not be above 0.05% as measured by loss-in-weight at 270°F for 15 minutes. If the moisture is above the recommended level, the resin should be dried in a desiccant dryer at 150°F until the moisture is at or below the recommended level. Failure to dry the material will result in material hydrolysis which can cause excessively high flow/flashing; brittleness/low strength; and can result if shorter than normal shelf life of molded parts.
Typical injection molding temperatures are listed below, these are only a guide and may need to be changed based on the particular application :
Rear 310°F to 360°F Middle 320°F to 360°F Front 320°F to 360°F Nozzle 320°F to 360°F Mold 40°F to 95°F The melt temperature of the resin should remain below 400°F to prevent the material from discoloring and having a burnt odor.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Specific Gravity | 1.25 | g/cm³ | ASTM D792 |
| Mold | 1.4 | % | — |
| Melt Index (190°C, 2.06kg) | 4 | g/10 min | ASTM D1238 |
| Tensile Strength (Yield) | 5800 | psi | ASTM D638 |
| Elongation | 138.4 | % | — |
| Notched Izod | 0.7 | ft lb/in | ASTM D256 |
| Flex Strength | 5800 | psi | ASTM D790 |
| Flex Modulus | 91374 | psi | ASTM D790 |
Packaging & Availability
- Packaging Type
- Packaging
Terratek® BD7120 resin is typically packaged in a sealed plastic-lined Gaylord at 1200 lbs/Gaylord or 250 lbs fiber drums.
Storage & Handling
- Storing
- The product should be stored in a cool, dry, and sanitary area to achieve maximum stability.
- Keep material in a sealed package or container to prevent excess moisture absorption.